Improvement in grain-binders



J. F. STEWARD Grain-Bimile-rs.

No. 21|,354. Patenfed Jan; 14,1879.

Wang's-sues: I lmenfior- N-PETERSI PNOTO-LITHUGRAPNER, WASHINGTON, D C

UNITED s'rnrns PATENT 01min JOHN F. STEWARD, OF PLANO, ILLINOIS.

IMPROVEMENT IN GRAIN-BINDERS.

Specification forming part of Letters Patent N0. 211,354, dated January14, 1879; application filed October 8, 1878.

To all whom it may concern:

Be it known that 1, JOHN F. STEWARD, of Plano, in the county of Kendalland State of Illinois, have invented new and useful Improvements inGrain-Binders, of which the following is a full description, referencebeing had to the accompanying drawings, in which Figure 1 is a sideview, and Fig. 2 is a plan view, while Figs. 3, 4, 5, and 6 are details.

My invention relates to that class of grainbinders in which the twistingdevices are operated by a reciprocating rack, or where the saidmechanism is operated by a pinion hav in g a reciprocation along astationary rack.

As shown, my invention is applicable to that class of grain-binders thatadvance toward the receptacle to gather the gavel and go through theseveral operations of completin g the band in their outward movement.

The object of my invention is to provide for the rotation of thetwisting device only while passing outward along the stationary rack,(when used in the form shown in the drawings,) and to provide against aretrograde rotary motion while passing inward over the same. i

In the drawings, A is a curved rack, with its curved extremitiesuntoothed, for the free passage of the lock-pinion when not in labor,supported on the post 0. B is a sweep, pivoted upon the post 0, carryingthe pinion D,

for operating the twisting mechanism and vibrating along the rack A. Thedisk E may be a gear for operating'the twister, which, in practice, Ilocate in the opening at the outward end of the said sweep. G is alatch, retained in position by the spring 0, and pivoted upon the stud fsecured to the rack. This latch, it will be seen, is pivoted at one endof the toothed portion of the rack, while its other extremity isprolonged, as shown at a, and so bent downward that the disk E may passover it. Beneath the bottom side of the disk E is the pin F. At H therack is deeply cleft for the passage of the elongated tooth i of thepinion D. The gap H is partly closed by the portion 6 of the latch G,made of such a length as to reach the arc outlining the ends of theteeth of the rack A. The pinion D being designed to slide over the rackin one direction, its teeth upon one side are cut away and the tooth ilengthened into a shoe, soas to provide an adequate amount of surface.The stud f, upon which the latch G is pivoted, being lengthened, servesas a support for the spring 0. The stud 9 serves as an axis for thepinion D. The part of the sweep B immediately above the pinion D is cutaway in the drawing, Fig. 2, to expose the parts more clearly to view.

The operation of my invention is as follows:

The pinion D, mounted upon the sweep B, startlng in its reciprocationfrom the position shown in Fig. 2, the pin F of the disk E strikes theextension to of the latch Gr, causing said pinion to commence itsrotation in the direction indicated by the arrow. By this partialrotation the tooth h is forced into engagement the retrograde movementof the sweep, there being nothing to engage with the pin F, vthe pinionis not started in areverse rotation, and the lengthened surface from hto 6 slides along the teeth of the rack. To provide against the pinionbeing made by any extraneous force to engage with the tooth is of therack in its retrograde movement, the part bis supplied, and it will beseen that any attempt to force said engagement will be met by the tootht coming in contact with its end and being caused to slide over. Thepinion continuing its sliding movement, the pin F will come in contactwith the latch to, but this being held in position by the spring a willreadily yield, allowing the pin a free passage. The part b of latch 'Gr,acting in connection with the tooth z, is placed horizontally inrelation to it; but the part a, acting with thepin F, which is below thedisk, is thrown down accordhigly, as shown in detail in Fig. 6.

The spring 6 may be made in any of the usual forms, but I prefer to useit as shown in Figs. 4 and 5.

a, causing the teeth of the rack and pinion to v engage at thedescribed.

2. The rack A, in combination with the pinion D, having a shoe ordelay-surface, and the proper time, substantially as yielding projection11, causing the shoe or de- I lay-surface to slide over the teeth of therack Ont-he return movement, substantially as described.

3. The combination of a rack with a pinion Vibrating or reciprocatingalong the face of the rack, and provided with a shoe or delaysurface,which slides upon the teeth of the rack in the return movement and locksthe pinion against rotation, substantially as described. v

4. The combination of the rack A, pinion D, and latch G, as and for thepurpose specified.

JOHN F. STEWARDL Witnesses:

' F. J. HUSE,

R. H. DIXON.

